class NotSupportException(Exception):
    def __init__(self, arg):
        self.args = arg
    def __str__(self):
        return "Not support " + self.args + " yet!"

class FileNotFoundException(Exception):
    def __init__(self, arg):
        self.args = arg
    def __str__(self):
        return "Not found anything in " + self.args + "!"
        
class OptErrException(Exception):
    def __str__(self):
        return "Get User Input Failed!"